Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : Ghostscript vulnerabilities (USN-4111-1)

critical Nessus Plugin ID 128322
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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Hiroki Matsukuma discovered that the PDF interpreter in Ghostscript did not properly restrict privileged calls when '-dSAFER' restrictions were in effect. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files.
(CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected ghostscript and / or libgs9 packages.

See Also

https://usn.ubuntu.com/4111-1/

Plugin Details

Severity: Critical

ID: 128322

File Name: ubuntu_USN-4111-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 8/29/2019

Updated: 7/8/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Critical

Score: 9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ghostscript, p-cpe:/a:canonical:ubuntu_linux:libgs9, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/29/2019

Vulnerability Publication Date: 9/3/2019

Reference Information

CVE: CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817

USN: 4111-1

IAVB: 2019-B-0081-S